70768309 has 16 divisors (see below), whose sum is σ = 76520448. Its totient is φ = 65273472.

The previous prime is 70768283. The next prime is 70768333. The reversal of 70768309 is 90386707.

It is a cyclic number.

It is not a de Polignac number, because 70768309 - 2⁵ = 70768277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70760309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116284 + ... + 116890.

It is an arithmetic number, because the mean of its divisors is an integer number (4782528).

Almost surely, 2^70768309 is an apocalyptic number.

It is an amenable number.

70768309 is a deficient number, since it is larger than the sum of its proper divisors (5752139).

70768309 is a wasteful number, since it uses less digits than its factorization.

70768309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 70768309 is about 8412.3902073073. The cubic root of 70768309 is about 413.6308661728.

The spelling of 70768309 in words is "seventy million, seven hundred sixty-eight thousand, three hundred nine".